Dental plugger.



No. 643,039. Patented Feb. 6, I900. c. L. CALVERT & E. ANDERSON.

DENTAL PLUGGER.

(Application filed May 4, 1899.)

(No Model.)

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DENTAL PLUGGER.

SPECIFICATION forming part of Letters Patent No. 643,039, dated February 6, 1900.

Application filed May 4,1899. Serial No. 715,585. (No model.)

To aZZ- whom it may concern.-

Be it known that we, CECIL LUCIEN CAL- vnnr and EDWARD ANDERSON, citizens of the United States, residing at Sundance, in the county of Crook and State of Wyoming, have invented certain new and useful Improvements in Dental Pluggers; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to dental pluggers, and more particularly to that class of springactuated pluggers which are manipulated and controlled by the operators hand; and the object is to improve and simplify the construction and increase the efficiency of the device.

To this end the invention consists in the construction, combination, and arrangement of the several elements of the device, as will be hereinafter more fully described, and particularly pointed out in the claims.

In the accompanying drawing the same reference characters indicate the same parts of the invention.

The figure is a side elevation, partlyin section, of our improved dental plugger.

1 denotes the casing, and 2 a longitudinal guide sleeve to receive the reciprocating plunger 3, the inner end of which is threaded to receive the adjustable anvil-head 4.

5 denotes a retractile spring encompassing the plunger between the guide-sleeve 2 and the head 4.

6 represents the master-wheel of a springactuated train of gearing mounted in the easing and of which the spur gear-Wheel 7 and the pinion 8 are component members. The pinion 8 carries a disk 9, on which are pivoted the radial arms 10 10, the inner ends of which are formed with the notches 11 11, which engage the stud-pins 12 12, fixed on the disk,to which said arms are pivoted. Each arm is provided with a hammer 13, which travels in the path of the outer end of the anvil-head, the impact of which drives the plunger forward, and after it has recovered its inertia the spring 5 restores the plunger and anvil to their normal position.

14 denotes a locking-lever fulcrumed in the casing, and its free end terminates in a finger-grip 15, while its inner end forms a lateral pawl 16, which is held in contact with the teeth on the gear-wheel 7 by the leaf-spring 17.

The device is very simple and effective in operation and is conveniently manipulated by the operator.

Of course it will be understood that the spring may be wound by means of a key and that the motor may be provided with a fangovernor for regulating the speed of the hammer or cam disk as used in this class of motors.

The accompanying drawing shows our invention in the best form now known to us; but many changes in thedetails might be made within the skill of a good mechanic without departing from the spirit of our in vention as set forth in the claims at the end of this specification.

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. In combination with the casing and the spring-actuated train of gearing, the springactuated plunger, the anvil adj ustably secured to said plunger, the disk wheel operated by said train and a hammer pivoted to said disk wheel and having its freeend projecting into the path of, and adapted to impart a longitudinal movement to said plunger, substantially as and for the purpose set forth.

2. In combination withthe reciprocating spring-actuated plunger, the train of gearing, thedisk operated by said train and the hammer-arms pivoted to said disk and provided with hammers and projecting into the path of said plunger, substantially as and for the purpose set forth.

In testimony whereof we have hereunto set our hands in presence of two subscribing witnesses.

CECIL L UCIEN CALVERT. EDWARD ANDERSON.

W'itnesses:

W. D. TOWNsEND, OHAs. G. THOMPSON. 

